Bottle-cap.



J. F. McDONNELL.

BOTTLE CAP.

APPLICATION FILED OCT-4.1916.

Patented July 17, 1917.

l mmw www wi m a i: as r. mononnntt, or LAKEWDOD, onro, assrenon, BY man on Am nnsnn' lssmniunirrs, .ro 'rnn 'iucnonnn'nt .Bor'rLE cAr. company.

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To all whom it'moy concern: I

Be it known that 1, JAMES F. MCDON- NELL, a citizen of the United States,

ing at Lakewood, in the county'ofCuyahoga' and State of Ohio, have invented a cer- Caps, of which the so as tain new and useful Improvement in Bottlefollowing is a full, clear, and exact description.

This invention relates to a bottle cap, and

1o has for its object to provide a cap which when applied to and crimped onto the neck of a bottle, not

and admission of air to the bottle is prevented, but the contents of the bottle is prevented from coming in contact-with any part of the cap which might be decomposed to affect the taste or quality of the contents.

It has been customaryheretofore, to seal bottles, such as beer bottles, with a metal cap which is crimped about the neck of the bottle and which is provided with agasket, usually in the form of a composition termed cor which is designed to provide an impervious sea This gasket is generally 'in the form of a disk extending entirely across the interior of the cap, or in the form of an annulus or washer-like member debottle neck.

' i'sfactory because the top tively overcomes both signed to be forced down onto the top of the While these devices have'b een more or less successful, particularly when applied with an efl'ective capping machine, nevertheless they havejnot proven to be entirely satedges of the bottle's are frequently irregu1ar,;due to fractures or to the fact that the bottles are'improperly formed originally, with the result that out of a given number of bottles which are filled and capped, the percentage of so- Additioncalled leakers. is-quit'e large. ally, the contents of the bottle comes in contact with either the metal or with the gasket, causing deterioration and seriously affecting the taste' of the contents of the bottle.

The invention herein described, eifecobjections. In the drawing wherein. I have shown the details of the cap, and two slightly diife'rent ways that the cap may be applied to the bottle, Figure 1 is a bottom view of the cap embodying my invention;

Fig. 2 is a sectional view of thesame; Fig. 3 is a perspec- I Specification of Letters Eaten't. Application filed October 4,

resid- 'has been applied to I only eifectively seals thebottle so that leakage of the contents from,

1916. Serial No. 128,617.

tive view of the gasket remdv'ed from the cap, part of the gasket being in section; Figs. 4 and 5 are sectional views.

the cap and neck of a bottle after the cap ing the middle part ofthe cap indentured or depressed, while Fig. 5 shows the top of the cap substantially flat or straight.

The cap, as usual, consists of a body 10 provided with a top portion 10 and a crimped flangeprskirt 10 Seated'in the cap and located at the junction of thetop 10 and flange 10 is a gasket 11 which is in the form of a washer or annulus, but instead of being rectangular in cross-section,

as is generally the case, it is triangular in cross-section, the lower face of the gasket being inclined in the manner clearly shown. in Flgs. 2 and 3 for a purpose to be subsequently explained.

On the inner side of the cap I provide a thin layer 11?, preferably aluminum, which will not be attacked or afiected by the contents of the bottle. This layer may be in the form of a disk cut from a thin sheet or} foil of aluminum. 1 When this layerll is employed, the iron or so-called tin of which the cap is made, is not exposed at any point within the confines of the gasket.

The effect of this construction when ap-' plied to the bottle will be apparent from Figs. 4 and 5.- When the cap is applied the latter, Fig. 4 show-" Patented July 1W, l fll't...

through to the neck of a bottle12 with any of the usual capping machines, crimping -or around the outside of the neck leaving the top flat or substantially flat as shown in Fig. 5, or by both pressing the cap aboutthe outside of theneck and also indenting the either by simply central part of the cap as indicated at 13 triangular'shaped gasket inin Fig. 4, thestead of being pressed down onto the ve top of the bottle as heretofore, is. caused to engage around the outside of the neck of the bottle, and at the same time the metal is brought down onto the top of the neck so that the contents of the bottle comes in contact only with the aluminum coated part of the cap, and not in contact even with the gasket.=-: The advantage of having the gas-' forcing the flange ofthe cap 7 ket engage the outer-portion ofthe neck as j I illustrated in Figs. 4' and 5 is that amore eiiective seal is provided, and the percentage of leakers is reduced to a minimum for the reason thatthe irregularities or fractures are almost invariably at the top edge of the bottle neck, and by causing the gasket to come well around the outside of the neck, the gasket is caused to engage the smooth part of the neck. In cap-ping the bottle sufficient pressure is created on the gasket to cause an impervious seal, but the disposition of the gasket is such that the great pressure which is applied by the capping machine onto the neck of the bottle istaken up by the, bottle itself instead of by the gas- 7 ket, with the result that the gasket is not compressed into a hard solid mass as is the piece of metal having'a top and a 'downturned flange, and a gasket seated on the interior of the cap at the junction of the top and flange and provided with a lower tapered surface which inclines from the flange upwardly and inwardly to the top portion of the cap, said gasket being in the form of a ring orannulus having an inner the flange to the inner surface of tapered surface and being thicker in the middle than at its edges.

2. A bottle cap consisting of a piece of metal'having a circular top and a downturned flange, and a gasket in the form of a ring or annulus fitting into the corner at 40 the junction of the top and flange, said gasket being, normally substantially triangular in cross-section so as to present an inclined surface to the top of the bottle. 4

3. A bottle cap consisting of a dish-shaped piece of metal having a top and a downturned flange, and a gasket seated on the interior of the cap at the junction of the top and flange and being normally substantially triangular in cross-section so as to present an inclined surface to the neck of the bottle, the maximum thickness of the gasket being at the junction of the top and flange of the cap.

4. A bottle cap consisting of a piece of metal having a substantially flat circular top and a down-turned flange, and a gasket in the form of a ring or annulus fitting into the corner at the junction of the top and flange, and having a lower tapered surface which extends from the inner surface of the top, the inner surface of the cap within the confines of the gasket being covered with a disk of alumin In testimony signature.

whereof, I hereunto aflix my JAMES F. MCDONNELL. 

